Hundreds of high school and college students walked out in protest in Seattle, Phoenix, Los Angeles and three other cities in the Bay Area, Richmond, El Cerrito and Oakland.

A predominantly Latino group of about 300 high school students walked out of classes on Wednesday morning in Los Angeles and marched to the steps of City Hall, where they held a brief but boisterous rally.

A woman yells as she takes part in a protest against President-elect Donald Trump In Seattle's Capitol Hill neighbourhood

Chanting in Spanish "The people united will never be defeated," the group held signs with slogans such as "Not Supporting Racism, Not My President" and "Immigrants Make America Great."

Many of those students were members of the "Dreamers" generation, children whose parents entered the United States with them illegally, school officials said, and who fear deportation under a Trump administration.

"A child should not live in fear that they will be deported," said Stephanie Hipolito, one of the student organizers of the walkout. She said her parents are U.S. citizens.